package com.chanzany.facade;

//影院灯光
public class TheaterLight {
    private static final TheaterLight instance = new TheaterLight();
    public static TheaterLight getInstance(){return instance;}
    public void on(){
        System.out.println("TheaterLight on");
    }
    public void off(){
        System.out.println("TheaterLight off");
    }
    public void brighter(){
        System.out.println("TheaterLight brighter");
    }
    public void dimmer(){
        System.out.println("TheaterLight dimmer");
    }

}
